Any process that stops, prevents or reduces the frequency, rate or extent of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator.
Synonyms:
exact_synonym:
down regulation of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator; downregulation of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator
narrow_synonym:
inhibition of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator